Line
- Bar Line: The division of the staff into measures is accomplished through the use of Bar lines. See Bar.

- Staff Line: A set of five, equidistant, horizontal lines on which the note pitches and other music directions are written. See staff.

- Ledger Line: Short, horizontal lines added above or below the staff along with notes to indicate pitches that exceed the limitations of the staff lines. See Ledger lines.

- Articulation Line: A horizontal line (dash) placed above a pitch to indicate to the performer that the note is to be held or stretched out to its fullest value; a tenuto mark. See Dash.

- Musical Line: A melodic statement which runs through a composition. This line (or voice) can be vocal or instrumental.
- Line or Phrase: A musical phrase or complete thought is often referred to as a line.
- Line Dance: Dances where dancers are all in a line: A type of dancing where all participants line up and perform all the steps to the dance simultaneously.
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